INGVCENTRO​NAZIONALE​TERREMOTI
Sala Sismica

Earthquake with magnitude of ML 1.2 on date 06-08-2018 and time 20:54:38 (Italy) in region 5 km S Amatrice (RI)

A magnitude ML 1.2 earthquake occured in region: 5 km S Amatrice (RI), on

  • 06-08-2018 18:54:38 (UTC)
  • 06-08-2018 20:54:38 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.59, 13.3 at 10 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

Search earthquakes: Any within 30 km radius

The values of hypocentral coordinates and magnitude may be revised at a later time as more information becomes available.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Amatrice RI 5 2657 2657
Campotosto AQ 6 542 3199
Capitignano AQ 7 665 3864
Montereale AQ 9 2581 6445
Cittareale RI 12 482 6927
Accumoli RI 13 667 7594
Crognaleto TE 15 1297 8891
Barete AQ 15 737 9628
Cagnano Amiterno AQ 16 1369 10997
Borbona RI 16 617 11614
Pizzoli AQ 17 4326 15940
Cortino TE 17 656 16596
Posta RI 18 694 17290
Fano Adriano TE 20 296 17586

Municipalities with at least 50000 inhabitants

An earthquake occurred to
27 Km N of L'Aquila (69753 inhabitants)
34 Km W of Teramo (54892 inhabitants)
54 Km E of Terni (111501 inhabitants)
64 Km SE of Foligno (57155 inhabitants)
70 Km W of Montesilvano (53738 inhabitants)
76 Km W of Chieti (51815 inhabitants)
76 Km W of Pescara (121014 inhabitants)
81 Km NE of Guidonia Montecelio (88673 inhabitants)
81 Km NE of Tivoli (56533 inhabitants)
95 Km SE of Perugia (166134 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Rev 100 ML 1.2 2018-08-06
18:54:38
42.59 13.31 11 2018-08-06
19:00:01
Sala Sismica INGV-Roma 59452711
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-08-06 18:54:38 ± 0.15
Latitude 42.59 ± 0.01
Longitude 13.31 ± 0.01
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 59452711

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1004
Semi-minor axis of confidence ellipse (meter) 999
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 196
Circular confidence region, given by single value of horizontal uncertainty (meter) 1000
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 96
Number of associated phases, regardless of their use for origin computation 15
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.39
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.33455
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 7
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.4
Num. used stations 12
Type of magnitude ML
Reference to an origin 59452711
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-08-06 19:00:01
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.FDMO.HHZ. 2018-08-06T18:54:54.93 3.0 undecidable manual S -0.55 0
IV.MC2.EHZ. 2018-08-06T18:54:51.47 0.6 undecidable manual S 345 0.3345 50 0.27 46
OB.GAVE.EHZ. 2018-08-06T18:54:49.96 0.6 undecidable manual S 289 0.3202 50 -0.79 39
IV.GIGS.HHZ. 2018-08-06T18:54:48.32 0.3 undecidable manual S 124 0.2383 50 -0.02 74
IV.TERO.HHZ. 2018-08-06T18:54:47.68 0.6 undecidable manual S 81 0.223 50 -0.19 48
IV.MC2.EHZ. 2018-08-06T18:54:47.02 0.1 undecidable manual P 345 0.3345 50 1.11 68
IV.MTRA.EHZ. 2018-08-06T18:54:45.89 0.6 undecidable manual S 22 0.1826 117 -0.71 42
OB.GAVE.EHZ. 2018-08-06T18:54:45.09 0.6 positive manual P 289 0.3202 50 -0.56 43
IV.RM33.EHZ. 2018-08-06T18:54:44.03 0.6 undecidable manual S 220 0.1025 133 -0.05 50
IV.GIGS.HHZ. 2018-08-06T18:54:44.32 1.0 undecidable manual P 124 0.2383 50 0.05 25
IV.TERO.HHZ. 2018-08-06T18:54:43.93 0.1 undecidable manual P 81 0.223 50 -0.06 98
IV.SMA1.EHZ. 2018-08-06T18:54:42.88 0.6 undecidable manual S 27 0.0486 153 0.09 51
IV.MTRA.EHZ. 2018-08-06T18:54:42.98 0.3 undecidable manual P 22 0.1826 117 -0.28 71
IV.SMA1.EHZ. 2018-08-06T18:54:41.28 0.1 negative manual P 27 0.0486 153 0.22 98
IV.RM33.EHZ. 2018-08-06T18:54:41.90 0.1 positive manual P 220 0.1025 133 0.09 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SMA1.EHN. ML:1.4 0.000372 1.84 AML other m 2018-08-06T18:54:43.06
IV.SMA1.EHE. ML:1.7 0.0008915 0.16 AML other m 2018-08-06T18:54:43.18
IV.RM33.EHN. ML:1.4 0.0003085 0.14 AML other m 2018-08-06T18:54:44.13
IV.RM33.EHE. ML:1.3 0.0002265 0.14 AML other m 2018-08-06T18:54:44.37
IV.MTRA.EHN. ML:1.3 0.0001435 1.16 AML other m 2018-08-06T18:54:46.18
IV.MTRA.EHE. ML:1.3 0.0001425 0.22 AML other m 2018-08-06T18:54:46.40
IV.TERO.HHN. ML:0.9 4.795E-5 0.34 AML other m 2018-08-06T18:54:47.77
IV.GIGS.HHE. ML:0.3 8.905E-6 0.94 AML other m 2018-08-06T18:54:48.50
IV.TERO.HHE. ML:0.9 5.07E-5 1.52 AML other m 2018-08-06T18:54:49.06
IV.GIGS.HHN. ML:0 7.17E-6 0.88 AML other m 2018-08-06T18:54:49.21
OB.GAVE.EHN. ML:1 3.97E-5 1.58 AML other m 2018-08-06T18:54:50.96
OB.GAVE.EHE. ML:1.1 4.335E-5 0.26 AML other m 2018-08-06T18:54:57.69
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download